/Engine/Plugins/Experimental/FullBodyIK/Source/FullBodyIK/Public/JacobianSolver.h
Pre Solve - for each iteration, they run PreSolve. For each iteration, they may require to update info based on previous solved pose
virtual void PreSolve ( [TArray](API\Runtime\Core\Containers\TArray)< [FFBIKLinkData](API\Plugins\FullBodyIK\FFBIKLinkData) > & InOutLinkData, const [TMap](API\Runtime\Core\Containers\TMap)< int32, [FFBIKEffectorTarget](API\Plugins\FullBodyIK\FFBIKEffectorTarget) > & InEndEffectors ) const